Geothermal district heating power system

Pending Publication Date: 2022-08-18
ORMAT TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]A geothermal district heating (DH) system comprises a plurality of DH conduits each of said conduits extending to a corresponding heat consumer; means for delivering a DH-usable fluid through said plurality of DH conduits; a fluid circuit through which a geothermal fluid is flowable; and at least two heat exchangers, each of said heat exchangers configured to transfer heat dire

Problems solved by technology

However, the high costs involved in locating a suitable geothermal production well, drilling the well and connecting the well to the district heating system often outweigh the savings in the use of a geothermal resource, particularly when given fossil fuel derived waste heat has a high enthalpy

Method used

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  • Geothermal district heating power system
  • Geothermal district heating power system
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Example

[0014]A fluid medium flowable through a district heating (DH) system to, and meeting the heat demands of, a heat consumer (hereinafter a “DH-usable fluid”) is sufficiently heated, directly or indirectly, by means of a geothermal resource to obviate the need of supplementary heat influx with fossil fuel derived heat, such as waste heat, as has been practiced heretofore. The carbon dioxide emissions resulting from the combustion of the fossil fuels are therefore dramatically reduced, or completely eliminated.

[0015]The geothermal district heating system is rendered economically viable by utilizing a geothermal resource heat-depleted by a geothermal cogeneration system with a sufficiently high enthalpy level to transfer heat to the DH-usable fluid. The geothermal resource is thus influential in both generating electricity at the power-producing section and in producing heat at the heat-producing section, of the cogeneration system.

[0016]FIG. 1 illustrates an embodiment of a geothermal c...

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Abstract

A geothermal district heating (DH) system includes a plurality of DH conduits each of the conduits extending to a corresponding heat consumer; means for delivering a DH-usable fluid through said plurality of DH conduits; a fluid circuit through which a geothermal fluid is flowable; and at least two heat exchangers, each of the heat exchangers configured to transfer heat directly or indirectly from the geothermal fluid to said DH-usable fluid with a total heat influx provided by the at least two heat exchangers to said DH-usable fluid that is sufficiently high to raise a temperature of the DH-usable fluid to a predetermined DH-usable temperature without need for any supplemental fossil fuel derived waste heat to be transferred to said DH-usable fluid.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of geothermal energy. More particularly, the invention relates to a geothermal district heating system by which geothermally generated heat is distributed for residential and commercial heating requirements.BACKGROUND OF THE INVENTION[0002]In a district heating system, a heat resource that would otherwise be wasted is exploited by means of a network of conduits that deliver water heated by the resource to consumers, in order to meet their heat demands, generally in terms of space heating and the production of hot water. The conduits of the district heating system are generally relatively short to minimize the installation costs.[0003]Typical heat resources for a district heating system typically include waste heat from a combined heat and power station, often referred to as a cogeneration plant, waste heat from an industrial process, or a geothermal resource.[0004]Since heating and cooling needs account for about...

Claims

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Application Information

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IPC IPC(8): F01K25/08F24D10/00F01K17/02
CPCF01K25/08F24D10/00F24D2200/126F24D2200/11F01K17/02F01K11/02F24D3/18Y02B10/40Y02B30/12F03G4/035F24T50/00
Inventor BATSCHA, DAN
Owner ORMAT TECH INC
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